Mold for concrete blocks



May 18 1926.

w. A. FLINT ET AL MLD FOR CONCRETE BLOCKS Filed June 20,

1925 2 Sheets--SheeI 1 A TTORNE YS.

May 18, 1926.

1,584,920 W. A. FLINT ET AL MOLD FOR CONCRETE BLOCKS Filed June 20' 1925 2 Sheets-Sheet 2 ATTORNEYS.

Fatented May l, 192@ Unirse srares rarsn'r carica.

WILrfrAM A. FLINT Ann Canarias n. encierran, or caawroansvintn, rNnrANA, As-

srenoas ro rations Trina Macerata cateraar, or cnnwrosnsvrttn, iNDIANA,

A conPoRA'rIo'N.

MOLD FOR CONCRETE BLOCKS.

Application inea :rune so, 1925. sei-iai No. 38,445;

1Fhisf invention pertains toa collapsible form for molding concrete blocks or the like.

The principal objectr of the invention is to provide a form of this character which may be readily and easily handled7 into which the plastic materialy is adapted to be compressed from the interior outwardly against the walls of theV form by means of a collapsible pneumatic core.-

'llhe full nature of the invention will be understood fromthe` accompanying drawings and theV following descriptionv and claims.

Fig. 1 is a plan'view looking down on the form. Fig. 2 is a side elevation thereof. Fig.l 3 is an endY view thereof. Fig. is the Same as Fig.l 3 showing the form in open position. f i

In: the drawings there is shown a form having at base`v plate 10 provided with upwardly extending ribs 11, which ribs extend transverselyl across the base plate 10. and are spaced apart as shown in Fig. 2. Secured to theV base plate intermediate l-ot said rids there' is a strapV 12 having its ends extending outwardly at an angle from the base plate, to provide the stop arms 13' for receiving the side plates or walls .of the `form when 1n open position as shown in Fig. l. y lThe side walls' 14 are provided withl the downwardly extending arms 15 adapted to embrace the ends of the ribs 11 and be pivotally connected thereto by the rods 16. This permits the side plates to swing to closed position as shown in Figs. l, 2, and 3, and be moved to open position as shown in Fig. 4 so as to lie against the arms 13 for permitting removalV of the' block after having been formedv therein. rlhe sides 14- rnay be provided with, any suitable` variations in its; surface such as shownV by the dotted lines in Fig. 1 wherein there'are projections 16or forming recesses in the side surface of the block to be formed, and recesses 17 tol provide corresponding projections in the wall* of said bloclr. Extending upwardly beyondV tl-i'e4 topV edge" of the side walls there are gre-'oved'v locks 18. One of said wallsv is alsoY provided the outwardly extending-5 keepers 19,' extending'beyond the ends thereof, whilethe other'wall isfprvided-witli#rearwardly extending-ears" otally mounted adjacent said recesses there l are hand operated latch rods 23 adaptedl to l engage suitable slots in the keepers 19 asf shown Figsnl', and 3. Said end platesare providedY with an opening` or'hole 2l orreceiving a collapsible pneumatic core,Y notl shown. herein, which is' fully illustrated and .described inA the co-pending applica-tion, Serial No. 39,730, iled June 28,

1925,said core being adaptedto be inflated.

by compressed airVf'or exerting an interior pressure against the material contained in the formV and thereby forcing it and` conipressing it against the walls thereof.

A suitable pallet 25, usually made `of wood, is loosely mountedA on the ribs 11, said pallet being or"Y suchdimensions as to be embraced by the pivotallymounted side and end wallswhen in closed posit-ion, and support the material on the level with the lower edge of said walls.

The grooved locks 18, are adapted to receive atop wall 26 which is provided with suitable handles 27 connected by an integral strengthening ribv 28..r Said top wall 26 is adapted'to slide endwise of the form when the walls are inV closed position, and upon the upper edge thereof' so that its lateral edges will be engagedv and securely held against other than sliding movement by the grooves formed in the locks 16. By reason et this arrangement the top plate when slid, in place,vv is firmly locked against displacement by pressure of the material, and its sliding movement-isisucli asl to keep the material from accumulating on the upper edge of thel walls, aswell as in the retaining slots provided in theloclrslS.' I

'Ehe'side walls may have'y their inner.'- sur- :tacev groovedf verticallyasT shown` by the dotedVK linesv in Fig. 2, an'dfindicatedk at 29, to` receive a partition plate event? it"l is desired to divide? the' block v intoH two" parts during themolding operation; A Such. l partitionpl-teis alsoE providedj witlryai hole 24 through which the collapsible core is adapt ed to extend. rlhis permits oit a l2 inch mold making two G inch blocks, or three L inch blocks, or an 8 inch mold making two 4 inch blocks, etc.

rlhe invention claimed is:

l. A mold tor concrete blocks or the like.v comprising a hase, a pair of side plates pivotally mounted on said hase so as to extend upright therefrom in spaced parallel relation to each other when in closed position, and open outwardly away from each other when in open position, oppositely disposed end plates having one end thereof hingedly connected with one ot said side plates, means tor locking the other ends ot' said end plates to the other side plate, and a top plate rigidly secured over said side and end plates,

A mold for concrete blocks or the like, comprising a hase, a pair ot side plates pivotally mounted on said hase so ag to extend upright therefrom and spaced parallel with relation to each other when in closed position, and open outwardly away from each other when in open position, oppositely disposed end plates having one end thereof hingedly connected with one of said side plates, means for locking the other ends ot said end plates to the other side plate, and out. vardly extending arms secured to said hase plate for receiving and supporting said side plates when in open position, and a top plate rigidly secured over said side and end plates.

3. A mold tor concrete blocks or the like, comprising a hase, a pair ot side plates pivotally n'iounted on said hase so as to extend upright theretrom and spaced parallel with relation to each other when in closed position, and open outwardly away from each other when in open position, oppositely disposed end plates having one end thereof hingedly connected with one ot said side plates, means tor locking the other ends ot said end plates to the other side plate, a plurality ot grooved locks extending upwardly trom said side plates, and a top plate adapted to slide over the upper edge ot' said side plates in engagement with said grooved locks so as to engage and lock therein against outward movement.

4. A mold tor concrete blocks or the like, comprising a hase plate having a plurality of transversely extending rites, a pair ot side plates provided with downwardly extending arms pivotally connected to said ribs so as to permit said side. plates to swing inwardly to closed position or outwardly to open position, rearwardly extending ears formed at the base at the end ot oneof said side plates and outwardly'projecting keepers extending from the ends of the other side plates, and a pair ot end plates having one end thereof pivotally mounted .between said ears and the other end thereof adapted to engaee and lock with said keepers Jfor securing said end plates and side plates in closed position, the unlatching thereot permitting both end and side plates to swing to open position on their pivotal mountings.

A mold tor concrete blocks or the like, comprising a hase plate having a plurality ot transversely extending ribs, a pair ot side plates provided with downwardly extending arms pivotally connected to said ribs so as to permit said side plates to swing inwardly to closed position or outwardly to open position, rearwardly extending ears formed at the ends ot one of said side plates and outwardly projecting keepers extending from the end ot' the other side plate, a pair ot end plates having one end thereof pivotally mounted between said ears and the other end thereof adapted to engage and lock with said keepers tor securing said end plates and side plates in closed position, the unlatching thereof permitting both end and side plates to swing to open position on their pivotal mountings, and a pair ot outwardly extending arms secured to said base plate for supporting the side plates in their open or outwardly extending position.

G. A mold tor concrete blocks or the like, comprising a hase plate having a plurality ot transversely extending ribs, a pair of side plates provided with downwardly extending arms pivotally connected to said ribs so as to permit said side plates to swing inwardly to closed position or outwardly to open position, rearwardly extending ears formed at the ends of one of said side plates and outwardly projecting keepers extending from the ends ot' the other side plate, a pair of end plates having one end thereof pivotally mounted between said ears and the other end thereot' adapted to engage and lock with said keepers tor securing said end plates and side plates in closed position, the unlatching thereof permitting hoth end and side plates to swing to open position on their pivotal mountings, and a top plate adapted to slide over the top edge ot said side and end plates and he locked thereby against outward movement when the side and end plates are in closed position.

.7. A mold 'tor concrete blocks or the like, comprising a hase plate having a plurality ot transversely extending ribs, a pair of side plates provided with downwardly extending arms pivotally connected to said ribs so as to permit said side plates to swing inwardly to closed position or outwardly to open position, rearwardly extending ears formed at the ends ot one of said side plates and outwardly projectin-T keepers extending from the ends of the other side plates, a pair of end plates having one end thereof pivotally mounted between said ears and the other end thereof adapted to engage and lock with said keepers for securing said end Plates und side plat-es in closed position, the unlatohing thereoic permitting both end and side plates to sving to open position on their pivotal mountings, a top plate adapted to slide over the top edge of said side and end plates and be looked thereby against outward movement when the side and end plates are in closed positiomand a pair of outwardly extending arins secured to said base for sustaining said side plates when in outwardly extending or 10 open position.

In Witness whereof, we have hereunto aixed our signatures.

WLLAM A. FLINT. CHARLES H. COCHRAN. 

